Advertisements
Advertisements
प्रश्न
Explain briefly the following term with a suitable example:
Archegonium
उत्तर
- The multicellular flask-shaped female sex organ found in many gymnosperms, bryophytes, and pteridophytes is called the archegonium.
- The female gamete, egg, or oosphere is located at its dialated base, known as the venter.
- The male gametes are able to swim towards the oosphere because the cells in the narrow neck of the archegonium liquefy.
APPEARS IN
संबंधित प्रश्न
Name three groups of plants that bear archegonia. Briefly describe the life cycle of any one of them.
Mention the ploidy of the following:
Zygote of a fern
Explain briefly the following term with a suitable example:
protonema
Explain briefly the following term with a suitable example:
Antheridium
Differentiate between the following:
Liverworts and Moss
Which is NOT a character of bryophytes?
Which of the following play an important role in plant succession on bare rocks or soil?
Amphibians of the plant kingdom are
Bryophytes that prevent soil erosion by forming dense mats on the soil are ______.
A plant shows thallus level of organization. It shows rhizoids and is haploid. It needs water to complete its life cycle because the male gametes are motile. Identify the group to which it belongs to ______.
Protonema is ______.
The plant body in higher plants is well differentiated and well developed. Roots are the organs used for the purpose of absorption. What is the equivalent of roots in the less developed lower plants?
In Bryophytes male and female sex organs are called ______ and ______.
Why are bryophytes called the amphibians of the plant kingdom?
